The Flugelhorn is a valved bugle developed in Germany.
It is not generally used for aggressive or bright displays as both trumpet and cornet can be, but tends more towards a softer and more reflective role.
It is also the subject of terrible poetry:
The flugel is your friend,
The trumpet is your spouse,
Don't mix them up or
You may lose your house.
That's just awful. It doesn't scan well, and doesn't make a whole lot of sense either! I am now on a quest to find good poetry about instruments...